Tourist&#39;s glass.



UNITE nio.

JOHN M. FAEHRMANN, OF HOUSTON, TEXAS.

TOURISTS GLASS.

Specification of Letters Patent.

Patented Jan. 21, 1908.

Application filed September 6. 1907. Serial No. 391.735.

Houston, in the county of Harris and State of i Texas, have inventedcertain new and useful Improvements 1n Tourists Glasses, of which thefollowing is a specification, reference bei ing had therein to theaccompanying drawing.

My invention relates to improvements in tourists glasses, and isparticularly intended for the use of tourists, hunters, ranchmen,botanists, mineralogists, and analogous purposes, the object of which isto combine with a com` ass a plurality of instruments particularyadapted for the aforesaid persons and purposes.

1n the accompanying drawings, Figure 1, is a perspective view of myimproved instrument showing the several parts unfolded or open. Fig. 2,is an edge view of my invention showing the several parts folded andplaced in a carrying case. Fig. 3, is a side elevation of my inventionshowing it in a carrying case.` Fig. 4, is a sectional view showingmeans for adjusting one of the lenses of the distance glass. Fig. 5, isacross-sectional view of Fig. 4. Fig. 6, is a sectional view showing amodified form of device for permitting the adjustment of the lens of thedistance glass. Fig. 7, is a cross-sectional view of Fig. 6. Fig. 8 is adetached perspective view of the split member or stem for limiting themovement of the member which carries one of the lenses of the distanceglass.

In carrying out my invention 1 provide a main or body portion 1,preferably of circular form, and in one side of this body portion I formor provide a compass 2 and on the opposite side the body portion isprovided with a mirror 3 indicated in dotted lines, Fig. 1. Projectinglaterally from the edge of the main or body portion 1 is a hollow arm ortube 4, and telescoping within this tube 4 is an adjustable tube 5.Hinged to the edge of the body portion 1 directly opposite the tube 4 isa lens 6, and this hinge is so constructed that the lens may fold downover the compass, as shown in Fig. 2, but cannot go beyond the verticalposition shown in F ig. 1. Hinged to the outer end of the telescoping oradjustable tube 5 is a second lens 7, and this lens is adapted to befolded inward over the tube 4, as shown in Fig. 2, but cannot swingoutward beyond a vertical position. When the lenses 6 and 7 are in thevertical position shown in Fig.` 1 they form a distance glass.

The adjustment of the tube 5 within the tube 4 may be accomplished invarious ways, two of which are here illustrated. 1n Figs. 4 and 5 oneform is shown and it consists in providing the adjustment tube 5 with acentrally arranged web 8 which has vits upper edge provided with gearteethr 9, and journaled in the stationary tube 4 is a pinionshaft 10carrying at an intermediate point a pinion 11 adapted to mesh with theteeth 9, and on one end of the shaft 10 is a thumbhandle or screw 12, bywhich the shaft is rotated and the tube 5 moved in and out for focusingthe distance glass in a manner well understood. To permit the movementof the adjustable tube 5 past the pinion shaft 10 it is cut out at itsupper portion, as shown at 6.

A modified form for permitting the ad-' justment of the tube 5 is shownin Figs/6 to 8, and consists in providing one of the tubes withlongitudinal slots 13, and the other tube with a transverse member 14.This transverse member is formed from a stem of sheet metallongitudinally split from opposite ends, and the bifurcated portions 15turned in o posite directions, as shown, and engaging t e outer wall ofthe outer tube with tension so that the tubes are prevented from havingany lost motion in a lateral direction.

Hinged to the tube 4 and extending in a direction opposite the lens 7 isa member 16 which carries at its outer end a lens 17. This member, whenin the position shown in Fig.

1, forms a handle for the instrument, and i especially when being usedas a distance glass. 1t is also adapted to be folded inward against themirror 3, as shown in Fig. 2, and When so folded the mirror 8 becomes amagnifying mirror, and is particularly useful for a person to criticallyexamine the eye, or other portion of the body which can only be examinedwith the use of a mirror. This will be particularly useful to thecharacter of persons hereinbefore mentioned, who are oftentimes alone,and therefore need to critically examine aninjured eye or other portionof the body visible to him only by means of a mirror. The lens 17 isalso adapted to be used as an ordinary magnifying glass, and the mirror3 as an ordinary mirror.

An instrument of the kind herein shown and described combines in asingle device a pluralityof instruments which are the neceswhichconsists of the side member 19 and the end members 20 and 21. Theinstrument is adapted to be placed in this case, as shown in Fig. 2, andit is held in this case by means of the following construction. Theouter end of the tube 5 is provided with a pointed projection 22 adaptedto engage a recess 23 formed in the head 20, and the opposite edge ofthebody 1 is adapted to engage a spring actuated plunger or member 24, asclearly shown in Fig. 3. The spring actuated plunger 24 isprovided withoutwardly-projecting pins 25 around which pass spiral springs 26, andthese springs have their outer ends resting in recesses 27 formed in thehead 21. Also rojecting from the plunger 24 is a stem 28 W ich isprovided with a slot 29 through which a pin 30 passes, by means of whichthe follower is held in its proper position. For the purpose of enablingthe instrument to be readily removed from the case, the sides of thecase are cut out as shown at 31, whereby the projection 22 can be forcedfrom the recess 23, and thus release the instrument and permit it to bereadily removed. The head 20 is provided with a ring 32 by means ofwhich the case may be attached to a suitable chain.

pass or extended at right angles thereto, an

arm rigidly secured to the body portion and extending from the oppositeside thereof and a lens-carrying member longitudinallyy adjustable uponthe armya lens member and adaptedv to be folded inward and to beextended at right angles to said member.

2. An instrument of the character described comprising a body portionhaving a compass in one side thereof, a lens attached to one edge of thebody portion and adapted to be folded over the compass or extended atcarried by said right angles thereto, an arm extending from the oppositeedge of the body portion and carrying an inwardly folding coperatinglens, and a folding handle connected with the said arm at a pointopposite the last mentioned lens.

3. An instrument of the character described, comprising a body portionhaving in one side a compass, an inwardly-folding lens attached to oneedge of the body portion, an arm extending from the opposite edge of thebody portion, an inwardly-folding coperating lens carried by the saidarm, a folding handle projecting from the opposite end of the arm andcarrying a lens a distance from its hinge substantially equal to thelength of the said arm, whereby the lens will fold against the oppositeside of the body portion when the handle is folded.

4. An instrument of the character described, comprising a body portionhaving in one side a compass and in its opposite side a mirror, aninwardly-folding lens hinged to the edge of the body portion, an armprojecting vfrom the opposite edge of the body portion and carrying ancooperatingA lens, an inwardly-folding handle carried by the arm andlocated opposite the last-mentioned lens, the handle being of a lengthsubstantially equal to the length of the arm, the handle havingrojecting therefrom a lens, whereby when tfie handle is fold ed the lenswill cover the mirror to form a magnifying mirror.

In testimony whereof I affix my signature in presence of two witnesses.-

JOHN M. FAEHRMANN.

Witnesses:

JOHN L. FLETCHER, C. R. Wmerrr, Jr.

inwardly-folding

